-- d/d.go --
package d

const FortyTwo = 42

func DFunc() int {
  return FortyTwo
}

-- e/e_test.go --
package e

import (
	"M/a"
	"M/b"
	"testing"
)

func TestBlah(t *testing.T) {
	if b.BFunc() == 1010101 {
		t.Fatalf("bad")
	}
	a.AFunc()
}
-- f/f.go --
package f

var F int

func Id() int {
	F += 9
	F *= 2
	return 42
}